mugearite


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mugearite

[myü′jē·ə‚rīt]
(petrology)
A dark-colored, fine-grained igneous rock in which the chief feldspar is oligoclase, plus orthoclase and olivine with some apatite and opaque oxides; originates by differentiation and volcanic crystallization of the primary magma.
References in periodicals archive ?
Although Jake_M is very different from known Martian rocks, Stolper and colleagues realized that it is very similar in its chemical composition to a relatively rare type of terrestrial igneous rock, known as a mugearite, which is typically found on ocean islands and in continental rift zones.
Lavas recovered from Welker Seamount include hawaiite, mugearite, and benmoreite, all with low MgO, Ni, Cr and Sc, and light-REE-enriched trace element patterns (Dalrymple et al.
Lavas recovered from Bowie seamount range from alkalic basalt and basanite through hawaiite, mugearite and benmoreite (Engel et al.